parts eeter
10-28-2005, 03:20 PM
I recently purchased a 400 ex decked out in aluminum,with new wheels and razr 2s and just about everything I would ever want on it already except shox.The engine runs great but as told by the seller needed a rebuild and he gave me the new parts and here is what I have been given with my quad.
Piston=Wiseco 88mm 11:1
Cam= Magnum Part # AT-09136 Stage 2
Gaskets=Magnum top end kit std bore Prt# AT-10003T
I am ready to tear it down as its using massive amts of oil now and I dont want to let it get low and blow it.So my questions are as follows.
1.Is this a good piston to use as I have had bad luck with Weiscos in my jet skis?? If an increase in clearance is necessary I can do this if needed during boring process? Otherwise I will setup to man recomendations.
2. Is it stupid to use the stock valve springs with this cam and piston combo?? I am concerned about coil binding at full lift and the cam says I have to clay test engine to verify adequate clearance.I think this is a pain and really dont want to build my engine,time it and roll it over with clay on my piston because well I am really busy and dont have that kind of time to spend on it.So if anybody has used this combo without any problems let me know.I would really like to just take engine apart bore it and rebuild it with the new cam installed at factory timing of course minus decompression parts and be done with it.
3. I have rode a 440 ex before with a 13:1 piston and the same cam and it ran like crap.Was this just a crappy install or something because my oil smoker with jetting and bolt ons was faster by far.I am worried about this because I have ridden several ex quads and never really wanted one until I rode mine and was like wow it runs great!!! But it burns oil and this is the stuff I have been given and we all know the freebie factor is BIG!!
Piston=Wiseco 88mm 11:1
Cam= Magnum Part # AT-09136 Stage 2
Gaskets=Magnum top end kit std bore Prt# AT-10003T
I am ready to tear it down as its using massive amts of oil now and I dont want to let it get low and blow it.So my questions are as follows.
1.Is this a good piston to use as I have had bad luck with Weiscos in my jet skis?? If an increase in clearance is necessary I can do this if needed during boring process? Otherwise I will setup to man recomendations.
2. Is it stupid to use the stock valve springs with this cam and piston combo?? I am concerned about coil binding at full lift and the cam says I have to clay test engine to verify adequate clearance.I think this is a pain and really dont want to build my engine,time it and roll it over with clay on my piston because well I am really busy and dont have that kind of time to spend on it.So if anybody has used this combo without any problems let me know.I would really like to just take engine apart bore it and rebuild it with the new cam installed at factory timing of course minus decompression parts and be done with it.
3. I have rode a 440 ex before with a 13:1 piston and the same cam and it ran like crap.Was this just a crappy install or something because my oil smoker with jetting and bolt ons was faster by far.I am worried about this because I have ridden several ex quads and never really wanted one until I rode mine and was like wow it runs great!!! But it burns oil and this is the stuff I have been given and we all know the freebie factor is BIG!!